Bond-distributer for mica-towers.



H. R. EDGEGOMB. BOND DISTRIBUTER FOR MIGA TOWERS.

APPLICATION FILED FEB. 19, 1914-v Patenteg Jan. 26, 1915.

WITNESSES:

ATTOR N EY HENRY R. EDGECOMB, 0F WILKINS BURG, PENNSYLVANIA, ASSIGNOR TOWESTINGHOUSE ELECTRIGAND MANUFACTURING COMPANY, A CORPORATIGN OFPENNSYLVANIA.

orricn.

BOND-DISTEIBUTER FOR MICA-TQWERS.

Specification of Letters Patent. Pgfi emf gd an, 255; 1915,

Application filed February 19, 1914-. Serial No. 81%,?26.

weir d new and use; c 3. Bond Distributers for r yrs o1 w oh thefollowing is a spec; cor-ion.

y invention relates to the manufacture of insulating sheets composed ofmice flakes and s binding materioi or bond, and it has particularreference to means for continuously and uniformly distributing powderedbond over the mica fishes which are deposited upon a plate or receivingsurface located at the bottom of a tower.

My invention relates more particularly to mice building machines of thetype set forth in Patent No. 1,974,54'6 in which the bond distributersare cylindrical sieves that extend completely across the towers and rollupon oscillating frames to insure proper "istribution of the bond.machine of this character, the sieve must be taken out and rechargedafter each mics plate is formed. Consequently, the machine is idle a.isrge portion of the time because of the delay in recharging thebonddistributer.

The object of my invention is to provide on eliicient means forcontinuousiy and uniformly distributing the bond in s powdered cordancewith my invention; Fig. 2 is a. plan view of a. portion of my bonddistributor showing a continuously movable belt and the location of thenozzles that direct sir jets thereupon; Fig. 3 is an end View, partiallyin section, of my bond distributor, and Fig. 4 is a side View of aportion of the .deflector which insures a. uniform distribution of thebond.

Referring to the diiiwlilifs the structure shown comprises a. tower 2having a top portion 2 which is preferably located above the floor line3 of o balcony or platform and is provided with a conveyor a receivinghopper 5, a distributing hopper 3 u ejector 4'5 a bond distributingmechanism I 8 which embodies my invention. veyer i comprises an endlehaving a plurality o to which measured q may be supplied. The co eissuccessively ein ing hopper which is fiector 16. e disc upper 6 isrectly below the outlet iereceiving hopper 5, the deflector 10 beinlocated in its mouth. The ejector i located in the bottom of the hopper6, the arrangement of parts being such that mice flakes, falling fromthe hopper 5 into the hopper 6, are forced upwardly and outwardlytherefrom into the tower when compressed air is dis- The cons belt or chchzu'ged through the ejector T, the deflector 10 serving to prevent theflakes from returning into the hopper 5. The dry pow dered bond isdeposited in hopper ll secured to the outer wall of the portion 2 of thetower. An endless belt is, extending entirely across the tower andengaging a revoluble pulley 13 located upon the opposite woll of theextension 52 is continuously operated by :1 motor 1%. Powdered bond isfed to the moving belt 12 through a rectangular slot 15 formed in thebottom of the hopper 11, the amount of bond passing through the slotbeing regulated by an adjustable shutter 16. The belt 12 is so driventhat the bond deposited upon its upper face is fed forward into thetower. It is desirable to provide an agitator 17 within the hopper 11 inorder to preclude the 010 gi'ng of the bond at the outlet 15. In or orto actuate the agitator 17, ll provide an eccentrio 18 which derivespower "from the motor 14 by means of'a belted connection 19.

Centrally disposed over the belt 12 is a pipe 20 that is closed at oneend and is provided with a plurality of pairs of variously diverging anddownwardly extending n0zzles 21. The pipe 20 is connected to a supply ofcompressed air which is regulated by any well known means in order toprovide proper pressure for the air jets emitted frommove only the outeredges of the bond layer,

while the air jets from the succeeding nozzles remove successiveportions of the bond ic's layer as the belt advances forward until theiaslt jet completely cleans the bond from the e t. In Fig. 3 isshown-the arrangement of the nozzles 21 in combination with the supplypipe 20 and the belt 12, whereby portions of the bond are successivelyremoved from the belt, thus insuring that the portions of the mica towerthat are remote from the hopper 11 shall be adequately supplied withbond.

To preclude accumulations of the bond upon portions of the templet orreceiving surface (not shown) located in the bottom of the tower,deflecting plates 22 are provided to effect uniform distribution of thepowdered bond over the entire exposed area of the templet. Thedeflectors 22 are made so as to have a succession of warped or wavedsurfaces, as indicated in Fig. 4. The bond directed upon the differentportions of the deflectors is projected outwardly and downwardly sothat'a uniform distribution thereof is effected upon the mica flakes atthe bottomof the tower. A V-shaped shield 23, which is disposed abovethe bond distributer 8, prevents the accumulation thereupon of micaflakes ejected from ho per 6 and also provides supporting means or the 1deflectors 22.

From the above description, it will be apparent that a continuous showerof bond is provided under such conditions that large compositeinsulating sheets of mica and bond may be successively formed withoutnecessitating the shutting down of the mica building machine. Theproduct of my machine is of uniform excellence and thickness because ofthe uniform distribution of the powder bond upon the mica flakes.

Structural modifications may be effected within the spirit and scope ofmy invention, and the invention may be utilized for manipulating othermaterials than those specifically mentioned.

I claim as my invention:

1. A device for distributing a powdered material over a limited area,which com prises a movable belt, means for depositing the powderedmaterial thereupon, and diverging nozzles adapted to emit air jets whichare projected upon the belt to force the powdered bond therefrom.

2. A-device for distributing a powdered material which comprises amovable belt,

means for depositing the powdered material thereupon, and pairs ofdiverging and downwardly extending nozzles disposed above the belt, saidnozzles being so arranged as to emit air jets that remove successiveportions of the powdered bond from the belt. Q

3. A device for distributing a powdered material which comprises amovable belt, means for continuously depositing a uniform layer ofpowdered material thereupon,

and pairs of variously diverging nozzles adapted to emit oppositelydirected air jets upon the belt to force the powdered bond therefrom.

4-. A device for distributing a powdered material which comprises amovable belt.

means for depositing the powdered material thereupon, and a plurality ofpairs of diverging air nozzles disposed above the belt, the di-vvergence of the air nozzles varying so as to remove successive portionsof the powdered material from the belt.

5. A device for distributing a powdered material which comprises amovable belt,

means for depositing a unifof'm layer of powdered material thereupon,and pairs of decreasingly diverging air nozzles centrally so disposedabove thebelt that successive portions of the powdered material areremoved by the air jets as the belt travels under the nozzles.

6. A device for uniformly distributing a powdered material whichcomprises a movable belt, means for depositing the powdered materialthereupon, air nozzles adapted to emit air jets upon the belt, and adeflector against which the powdered, material is projected to effect asubstantially uniform distribution thereof upon a receiving surface.

7 device for uniformly distributing a powdered material which comprisesa mov-' able belt, means for depositing a uniform layer of powderedmaterial thereupon, pairs of variously diverging nozzles adapted to emitoppositely'directed air jets upon the 'belt',.and longitudinallydisposed deflectors having a succession of warped or waved surfacesagainst which the powdered material is projected to effect asubstantially uniform gilistribution thereof upon a receiving surace. j

8. The combination with a mica building tower, of a bond distributortherefor comto emit air jets upon the belt, anddeflectors against whichthe powdered material is projected to effect a uniform distributionthereof on a receiving surface.

9. The combination with a mica building tower, of a device for uniformlydistributing a powdered bond which comprises a movable belt that extendssubstantially "across the tower, meansfor depositing a uniform layer ofpowdered material thereupon, pairs of variously diverging nozzlesadapted to emit air jets u on the belt, and longitudinally disposed deectors to effect a substantially uniform-distribution of'the powderedbond on' a receiving surface.

10. The combination with a mica building tower, of a bond distributertherefor comprising a containing hopper, a'belt adapted to travelbeneath the hopper and extending substantially across the tower, meansfor de- In testimony whereof, I have hereunto positingbond upon thebelt, air nozzles subscribed my name this 13th day of Feb. 10 adapted toemit air jets upon the belt, and 1914'. deflectors against which the.powdered ma- HENRY R. EDGEGO.

-5 terial is projected to effect a, uniform dis- Witnesses:

tribution thereof on a} receiving surface dis- 0. W. A. OETTING, posedwithin the tower. B. B. 51-1 11' 5 s,

